See Also: plesiosaur(medicine)
plesiosaur(dictionary)

plesiosaur (iou)



plesiosaur noun. M19.
[mod. Latin Plesiosaurus genus name, formed as PLESIO-: see -SAUR.]
Any of a group of extinct marine reptiles of Mesozoic times, having a small head (often on a long neck), a short tail, and four large paddle-like limbs.
plesio'saurian adjective & noun (a) adjective of, pertaining to, or characteristic of a plesiosaur; (b) noun a plesiosaur: M19.
plesio'sauroid adjective & noun (designating or characteristic of) a long-necked plesiosaur M19.
plesio'saurus noun, pl. -ri , -ruses, a plesiosaur of the genus Plesiosaurus, with a long neck M19.